Posts Tagged ‘disease resistant’

Maize lethal necrosis and the molecular basis of variability in concentrations of the causal viruses in co-infected maize plant

Posted on , November 16, 2019

Maize lethal necrosis (MLN) disease is new to Africa. First report was in Kenya in 2012, since then the disease has rapidly spread to most parts of eastern and central Africa region including Tanzania, Burundi, DRC Congo, Rwanda, Uganda, Ethiopia and similar symptoms were observed in South Sudan. Elsewhere, the disease was caused by infection of Maize Chlorotic Mottle Virus (MCMV) in combination with any of the potyviruses namely; maize dwarf mosaic virus (MDMV), sugarcane mosaic virus (SCMV) and tritimovirus wheat streak mosaic virus (WSMV). In Africa, the disease occurs due to combined infections of maize by MCMV and SCMV, leading to severe yield losses. Efforts to address the disease spread have been ongoing. Serological techniques including enzyme-linked immuno-sorbent assay (ELISA), polymerase chain reaction (PCR), genome-wide association (GWAS) mapping and next generation sequencing have been effectively used to detect and characterize MLN causative pathogens. Various management strategies have been adapted to control MLN including use of resistant varieties, phytosanitary measures and better cultural practices. This review looks at the current knowledge on MLN causative viruses, genetic architecture and molecular basis underlying their synergistic interactions. Lastly, some research gaps towards MLN management will be identified. The information gathered may be useful for developing strategies towards future MLN management and maize improvement in Africa.

Western Seed case study

Posted on , November 3, 2019

“Introducing a new maize variety needs a great deal of investment. You need to build a convincing business case for varietal turnover. Some new varieties may do well for certain traits, but there are other factors other than yield to consider, for instance, producibility, cost of seed production and farmers preferences.” says Saleem Esmail, CEO of Western Seed.

Western Seed hybrids help smallholder farmers like Margaret Wafula and the Kaita family in western Kenya, get good maize harvests despite the numerous challenges like drought and diseases.

Read more about the Western Seed case study here.

Seeds of prosperity: Equator Seeds, Northern Uganda

Posted on Eastern Africa News, Eastern Africa News, Media&Stories, News & Stories, News Articles, Publications, Seed System News, Seed Systems, November 3, 2019

“80 percent of farmers in northern Uganda still use the farm-saved or recycled seed, which we consider as our biggest competitor. ”

Dorine Akoth, a demo-farmer in Gulu northern Uganda, admiring a maize plant on her demo plot. Photo: Joshua Masinde/CIMMYT.

“ Through demonstrations and our local seed marketing network, farmers can see how well the drought and disease tolerant hybrid UH5051 performs, even under erratic climate. This has helped them to gradually adopt our improved seed.” says Equator Seeds CEO, Tonny Okello.

A worker at the Equator Seeds processing plant in Gulu displaying 2-kg UH5051 maize seed packs. Photo: Joshua Masinde/CIMMYT

Discover this successful partnership between STMA and Equator Seeds to reach out maize smallholder farmers in Northern Uganda and South Sudan to improve their productivity and resilience here

Equator Seeds Case study

Posted on , November 3, 2019

“80 percent of farmers in northern Uganda still use the farm-saved or recycled seed, which we consider as our biggest competitor.

Through demonstrations and our local seed marketing network, farmers can see how well the drought and disease tolerant hybrid UH5051 performs, even under erratic climate. This has helped them to gradually adopt our improved seed.” says Equator Seeds CEO, Tonny Okello.

Discover this successful partnership between STMA and Equator Seeds to reach out maize smallholder farmers in Northern Uganda and South Sudan to improve their productivity and resilience here

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